A polar-coded transmission (PCT) scheme with joint channel estimation and decoding is proposed for channels with unknown channel state information (CSI). The CSI is estimated via successive cancellation (SC) decoding and the constraints imposed by the frozen bits. SC list decoding with an outer code improves performance, including resolving a phase ambiguity when using quadrature phase-shift keying (QPSK) and Gray labeling. Simulations with 5G polar codes and QPSK show gains of up to 2 dB at a frame error rate (FER) of 10 ⁻⁴ over pilot-assisted transmission for various non-coherent models. Moreover, PCT performs within a few tenths of a dB to a coherent receiver with perfect CSI. For Rayleigh block-fading channels, PCT outperforms an FER upper bound based on random coding and operates within one dB of a lower bound.

中文翻译：

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极性编码非相干通信

针对信道状态信息(CSI)未知的信道，提出了一种具有联合信道估计和解码的极性编码传输(PCT)方案。通过连续消除 (SC) 解码和冻结位施加的约束来估计 CSI。使用外部代码的 SC 列表解码提高了性能，包括在使用正交相移键控 (QPSK) 和格雷标签时解决相位模糊问题。使用 5G 极化码和 QPSK 进行的仿真显示，在帧错误率 (FER) 为 10 ^{-4 时}增益高达 2 dB 各种非相干模型的导频辅助传输。此外，对于具有完美 CSI 的相干接收器，PCT 在十分之几 dB 内执行。对于瑞利块衰落信道，PCT 优于基于随机编码的 FER 上限，并在下限 1 dB 内运行。